package com.fnzn.entranceGuard.util.qrCode;

import java.awt.image.BufferedImage;

import jp.sourceforge.qrcode.QRCodeDecoder;
import jp.sourceforge.qrcode.data.QRCodeImage;
import jp.sourceforge.qrcode.exception.DecodingFailedException;

import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;

public class QRCodeDecoderHandler {


    public static void main(String[] args) throws Exception{

        QRCodeDecoderHandler handler = new QRCodeDecoderHandler();
        String imgPath = "d://1.jpg";

        String decoderContent = handler.decoderQRCode(imgPath);

        System.out.println("解析结果如下：");


        System.out.println(decoderContent);


    }


    public String decoderQRCode(String imgPath) {
        // QRCode 二维码图片的文件

        File imageFile = new File(imgPath);
        BufferedImage bufImg = null;
        String decodedData = null;

        try {

            bufImg = ImageIO.read(imageFile);
            QRCodeDecoder decoder = new QRCodeDecoder();
            decodedData = new String(decoder.decode(new J2SEImage(bufImg)));

        } catch (IOException e) {
            System.out.println("Error: " + e.getMessage());
            e.printStackTrace();

        } catch (DecodingFailedException dfe) {
            System.out.println("Error: " + dfe.getMessage());
            dfe.printStackTrace();
        }
        return decodedData;
    }


    class J2SEImage implements QRCodeImage {

        BufferedImage bufImg;

        public J2SEImage(BufferedImage bufImg) {

            this.bufImg = bufImg;

        }
        @Override
        public int getWidth() {

            return bufImg.getWidth();

        }

        @Override
        public int getHeight() {

            return bufImg.getHeight();

        }


        @Override
        public int getPixel(int x, int y) {

            return bufImg.getRGB(x, y);

        }

    }

}
